213022770312 has 64 divisors (see below), whose sum is σ = 581075884800. Its totient is φ = 64540722240.

The previous prime is 213022770263. The next prime is 213022770329. The reversal of 213022770312 is 213077220312.

It is a self number, because there is not a number n which added to its sum of digits gives 213022770312.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1455843 + ... + 1595469.

It is an arithmetic number, because the mean of its divisors is an integer number (9079310700).

Almost surely, 2^213022770312 is an apocalyptic number.

213022770312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

213022770312 is an abundant number, since it is smaller than the sum of its proper divisors (368053114488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213022770312 is a wasteful number, since it uses less digits than its factorization.

213022770312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145426 (or 145422 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 30.

Adding to 213022770312 its reverse (213077220312), we get a palindrome (426099990624).

The spelling of 213022770312 in words is "two hundred thirteen billion, twenty-two million, seven hundred seventy thousand, three hundred twelve".